X Report 8 Dec 2025
SpaceX faces weather challenges as it scrubs the launch of its 3,000th Starlink satellite. Meanwhile, Elon Musk discusses advancing to a Type II civilization in an engaging social media post.
SL-12 R/B(1) (25786)
COSPAR: 1999-033B | Alt Name: Proton-K 397-02 Stage 3
DECAYED
Image
Additional Sources
Launch Details
Launch Date
June 18, 1999
Launch Site
Launch Pad
LC81/23
Launch Vehicle
Proton-K/DM-2M
Orbital Elements
NORAD ID
25786
International Designator
1999-033B
Decay Date
6/19/1999
Basic Satellite Info
Name
SL-12 R/B(1)
Alternative Name
Proton-K 397-02 Stage 3
Type
Rocket Body
Status
Space Junk
Owner
RVSNR
Country
Russia
Constellation
N/A
Related Satellites
Major Events
N/A
Summary
A rocket body, also commonly referred to as an upper stage or spent rocket stage, is the structural shell left behind after a rocket has delivered its payload to orbit. These large and often heavy pieces of space hardware can remain in orbit for years, posing significant collision hazards as part of the growing space debris problem. If left uncontrolled, rocket bodies have the potential to reenter Earth's atmosphere unpredictably, which can lead to falling debris in populated areas. Additionally, they risk colliding with operational satellites or the International Space Station, creating more debris and putting human life at risk.
Physical Characteristics
Length
6.5
Diameter
4.2
Span
6.5
Dry Mass
4185
Launch Mass
4185
Shape
Cyl
Radar Cross Section
17.1
Visual Magnitude
Unknown
Color
Unknown
Material Composition
Unknown
Technical Details
Payload
8S812
Purpose
Unknown
Mission
Unknown
Manufacturer
KHRR
Life Expectancy
Unknown
Bus
8S812
Configuration
Unknown
Motor
Unknown
Equipment
Unknown
Power System
Unknown
ADCS
Unknown
Transmitter Frequency
Unknown
Satellite Articles
View All Posts »Learn more about satellites and other related topics.
X Report 30 Jan 2025
SpaceX's Falcon 9 launches SpainSat NG-1 satellite as Starlink compatibility causes market ripples.
Space Brief 3 Sep 2025
Today's Space Brief delves into NASA's lunar nuclear power initiative, a strategic Army data integration project, and a rare SpaceX Falcon booster launch. Also covered are significant advancements in military satellite technology and Navy unmanned surface vehicles.
X Report 18 Dec 2024
SpaceX achieves significant milestones with Starship and multiple launch missions, while Starlink connectivity expands through T-Mobile's beta program.
Musk Denies SpaceX AI Phone Report; EchoStar Bankruptcy | KeepTrack X Report
SpaceX hits 77 Falcon 9 launches in 2026 as EchoStar subsidiaries file Chapter 11 and Musk disputes WSJ AI phone claims.
X Report 14 Jun 2025
SpaceX achieves significant milestones with the launch of new Starlink satellites and the production of its 10 millionth Starlink kit amidst ongoing challenges with space station delays.
X Report 20 Feb 2025
SpaceX and Rocket Lab make headlines with simultaneous launches, while Musk's Starliner comments stir controversy.
X Report 29 Apr 2025
SpaceX achieves a significant milestone with its 250th Starlink mission, and Starlink eyes expansion into South Korea amid rising global demand for satellite internet. Meanwhile, Amazon's Project Kuiper launches its first operational mission, marking increased competition for Starlink.